Aerial photo taken over Genesee River looking north toward Ontario Beach Park and Lake Ontario.

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An unusually precise research study has, for the first time, determined the sources of pollutants in the Genesee River - and a Rochester-area organization is convening an open workshop Thursday for people who want to do something about it.

The Genesee River Watershed Project, undertaken by environmental scientists from The College at Brockport, used sophisticated computer models to track phosphorus, sediment and other material in the river and its tributaries.

The massive study - 755 pages have been published so far, with one part yet to come - is a road map for change that lays out the ...